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nextmarte/README.md
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Marcus Ramalho

👋 About me

🎓 AI Researcher & Data Scientist from Niterói, Brazil 🇧🇷 🏛️ Ph.D. student at COPPEAD/UFRJ — researching AI Governance in municipal public administration 🚀 Founder @ BaXiJen — AI solutions for public and private institutions 🤖 AI Engineer at IVIG/COPPE/UFRJ — educational AI platform serving 1,600+ users (Portos Rio) 💻 Researcher & Developer at CID-UFF — data engineering, analytics apps, and AI systems for the public sector 👨‍🏫 Professor in UFF's MBA programs — Data Science and Corporate Finance 📚 Author of 4 published books on data science, AI, and finance • Translator of R para Ciência de Dados

💬 "Building bridges between AI, data, and public impact."

🧠 What I'm into

  • 🤖 AI Agents & Model Context Protocol (MCP)
  • 🧩 Agentic workflows with LangGraph & LangChain
  • 🗣️ Speech AI — STT/TTS pipelines with Whisper & XTTS
  • 📊 Data Science with Python, R, and Tidymodels
  • 🏗️ Data engineering — ETL pipelines & Lakehouse architecture
  • 🏛️ AI Governance frameworks for the public sector
  • 📘 Reproducible research with Quarto

💻 Featured projects

Project What it does Stack
☃️ Snowman AI 🏆 Autonomous scientific literature review agent — extracts references from PDFs, searches 6 academic databases, evaluates papers with AI, and exposes an MCP Server for Claude Desktop & Cursor. Winner of the Gradio MCP Hackathon LangGraph • Gradio • MCP • Python
🗣️ TalkingHead AI Conversational agents platform with Skype-style UI — STT (Whisper), RAG (ChromaDB), LLM & TTS (XTTS/ElevenLabs) with WebSocket streaming, multi-agent support and admin panel Next.js • FastAPI • RAG • CUDA
🎙️ Daredevil Audio/video transcription API optimized for PT-BR — Whisper with GPU acceleration, async processing (Celery + Redis), smart caching, 23 media formats Django Ninja • Whisper • CUDA • Docker
🖥️ Devel Full-stack async transcription platform with multi-user isolation, real-time polling, text correction and speaker identification TypeScript • Next.js • Prisma • Genkit AI
🌊 LAGUNA Water quality sample management system for the Lagoa Viva project (CID-UFF) — WQI calculation, GIS maps, field campaign checklists Django • PostgreSQL • Plotly • Folium
📈 PROSPECTA Sales opportunity management system — OAuth 2.0, RBAC, sales pipeline with stages and full audit trail Django • HTMX • PostgreSQL
🤖 Raspa Colab Automated web scraper for the Colab.re citizen complaints platform Playwright • BeautifulSoup

🏆 Highlights

🏅 WinnerGradio Agents & MCP Hackathon (Hugging Face) with Snowman AI 📗 4 published books — including A inteligência artificial nas ciências de dados (USP) and Aplicações em R (USP) 📄 ENANPAD 2025 — Lakehouse + RAG architecture for knowledge management in public companies 🥉 Top 3 papers in Finance — XV CASI 🌎 LatinR 2024 — co-translator of R para Ciência de Dados (PT-BR localization of R4DS)

🧰 Tech Stack


AI & Data: LangChain • LangGraph • Ollama • Claude • Google Gen AI SDK • RAG • MCP • Whisper • Gradio • Streamlit • Shiny • Tidymodels • n8n

📊 GitHub Stats

GitHub streak

Followers Stars

🌐 Connect with me

Portfolio  LinkedIn  Lattes  Email

"Building bridges between AI, data, and public impact."

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  1. Educaser-Maps Educaser-Maps Public

    Repositório criado para a palestra de Marcus Antonio Cardoso Ramalho (PPGAd-UFF) NO EDUCASER, evento satélite do VII seminário internacional de estatística com R

    R

  2. pt-r4ds pt-r4ds Public

    Forked from cienciadedatos/pt-r4ds

    Tradução do livro "R for Data Science 2ed" para Português

    R

  3. nextmarte.github.io nextmarte.github.io Public

    TeX

  4. aulapurrr aulapurrr Public

    TeX 1

  5. template_quarto_UFF template_quarto_UFF Public

    Template de TCC usando Quarto markdown (QMD) e Latex partial

    TeX

  6. curriculo curriculo Public

    HTML